Reversible steam-boiler.



` y fl) No. 672,795. MLMLJM Patented Apr. 23, |901.

` T. w. MoRAN.

REVERSIBLE STEAM BOILER.

(Application filed Dec. 27, 1900.

(No Model.) 2 Sheets-Sheet l.

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No. 672,795.- Patented Apr. 23, |901.

T. w. MDRANH REVERSIBLE VSTEAM BOILER.

(Application led Dec. 27, 1900.)

(No Model.)

2 Sheets-Sheet .2.

llllllllmlllmmm ./ATTEST. I INVENTUR- m T.W,"loram'4 FFICEG THOMAS WILLIAM MORAN, OF LOUISVILLE, KENTUCKY.

REVERSIBLE STEAM-BOILER.

SFECIFICATION forming part of Letters Patent N o. 672,795, dated April 23, 1901.

Application filed December 27, 1900. Serial No. 41,2369. (No model.)

To all whom it may concern: y Be it known that I, THOMAS WILLIAM Mo- RAN, a citizen of the United States, and a resident of Louisville, in the county of Jeier son and State of Kentucky, have made a certain new and useful Invention in Reversible Steam-Boilers, dac. and I declare the following to be a full, clear, and exact description ofthe invention, such as will enable others skilled in the art to which it appertains tomake and use the same, reference being had to the accompanying drawings, and to letters of reference marked thereon, which form a part of this specification.

Figure l is a transverse vertical section through my boiler. Fig. 2 is a top plan View of the same with the cover removed and headpartly broken away. Fig. 3 is a section of my fusible-plug device. Fig. 4 is a detail plan view of the steam-coil.

The invention relates to steam-boilers, and particularly to an upright cylinder type intended to be used for fire-engines, steamboats, automobiles, and locomotives, although it may be applied Wherever a powerful and efficient steam-generator is needed.

The invention consists in the novel construction and combinations of parts, as hereinafter set forth.

In the accompanying drawings the letter A designates one head of the boiler; B, the other head; C, the side wall, and D D the lues.

E is a large central flue-pipe which forms a tie, serving as a stay for the head-plates in their central or weakest portions. The heads or head-plates are usually formed with circumferential flanges c and b, which extend outward and are somewhat flared in order to provide an interspace, as at a' and b', between the flanges and the side wall. These heads are preferably of similar form and construction, the head A being provided with an opening at c for the smoke-flue, another at e for the exit of the steam-pipe connection to the steam-chest, and a third, e, for the attachment of a steam-gage. The head B is provided With similar openingsf for the entrance of a gas or vapor pipe to the burner f for the water-feed and mud-valve and f" for convenience in reversal. These head-plates being flanged, as stated, form similar chambers, the lower one, I, serving as a fire-box and the upper one as a superheatingchamber K, in which is located the stea1n-coil G. In the re-box is indicated a burner F, which is provided with a perforated bottom plate h, which is formed with a flange for attachment tothe lower edge of the boiler. The steam-coil chamber K is provided with a cover L, which is attached to the upper edge of the boiler. This cover L as Well as the side wall of the boiler is packed with asbestos and closed in withsheeting of Russia iron. The cover L and the burner F are secured in position by means of screws m, and when these are removed and the fuse-plug tube and steam-coil and other attachments are disconnected the boiler proper, with the dre-box and the steamcoil chamber, all being in one, can be det-ached from the jacket and reversed, the upper head A being transferred to become the lire-box, while the head B is changed to the top of the boiler and becomes the steam-coil chamber. The pipe attachments being put in position, the boiler is ready for operation again. This reversal can be made in a short time and serves animportant purpose in extending the life of the boiler.

The central flue-pipe E extends through openings d and d' in the upper and lower heads, and its ends are threaded for the nuts c, whereby it is secured in position. The upper nut c engages the shouldered thimble t, which engages, by means of its shoulder, the upper head-plate. This thim biet is provided with an opening t', which is threaded for the reception of the innerl end of the steam-coil pipe G, the turns of which are usually arranged to form an inverted cone, theinclination of which causes Water of condensation to pass back into the boiler, besides having a larger heating-surface.

In order to increase the heating effect of the lines D D, they are somewhat inclined in opposite directions in such a manner as to provide a staggered arrangement. To this end the due-pipes of one circle are inclined in one direction with reference to their radial planes, while those of the next circle are inclined in the opposite direction. These inclined fines are designed to generate more steam than would be the case if they were perpendicular to the planes of the b0ilerheads, not only on account of their greater IOO amount of heating-snrface, but also because the currents of the heated particles will, in a manner, intersect the flues and the circulation will be increased. These double inclined dues also brace the heads of the boiler together.

P indicates the extension fusible-plug device, which consistsof a pipe p, having in its upper end the fusible plug p, this pipe being connected to the thimble s, which is screwed into a threaded opening in the lower head-plate. In thispipe, at its lower end, are openings fn, controlled by thevalve V, the stem of which has an adjustable screw engagement with the pipe p. Thelower openings fn serve to allow the melted metal of the plug to run out. The object of the valve is to enable the operator to closethe pipe for running purposes after the safety-plug has been melted in serving its end.y

This boiler is designed to be neat and com- 3 the jacket, of the reversible boiler proper, its

pact, requiring but little space in comparison with its power and efficiency. It is very strong, the re-box, breeching, and boiler being all three in one structure.

When the lower head becomes incrusted or coated on its inner or water side with scale or deposit of non-conducting material, sothat the boiler does not make steam as readily and quickly as it should, the pipe-unions may be unscrewed and the boiler reversedthat is,

turned end for end-and reconnected in aA short time-about thirty minutes-and then the boiler will work as well as a new one, as i necessary.' This flue or tubemade large and strong,acts as a mainstay to hold the crownsheets A and B'securel y intact at the center, i in presence of two witnesses,

. The valve may, if desired, be4 carried in l the tool-box of the carriage, and when the fuse-plug melts out, if there is occasion for i haste, the valve may b e used to plug the boiler, thus enabling the operator to rell f which would otherwise be the weakest point.

theads 'of exactly similar pattern for interchangeable connection with pipe attachments, substantially as specified.

2. In a reversible-cylindersteam-boiler, the central due-pipe engaging the central reversible portions of the head-plates, and the rel movable superheating-coil having a connectially as specified.-

4. In a steam-boiler, the combination with end flanges forming the tire-box, and breechl chamber, the central tie-liuc, the removable burner and the removable superheating-coil,

` substantially as speciied.

5. In a steamrboiler, the combination with the reversible boiler proper, and its end anges forming thelire-box and breech-chamber, of a central tie-flue, a removable burner,

a removable superheating-coil,l and aA removable fusibleplug extension -t'ube, substantially as speciied.

6. In a steam-beiler, the combination with theside wall and the similar outwardlyflanged head-plates of the oppositely-ijnelined or staggered `iilues,:an,d 'the central tie-Hue, substantially as specified.

7. A reversiblefiue boiler, havingy similar head-chambers, a removable superheatingcoil in one, and a removable bnr-ner in the other,a removable center tie-fine a shoul- 2 dered 'thi'mble connected t0 thesupjerheatingcoil, andan extended fusible-plug pipe having a, valve, substantially as speci'ljed,

In testimony whereof` I aftixmy signature THOMAS WILLIAM MORAISL Witnesses:

E. E. SUTTON, I. Lrrneow SMITH. 

